Therefore, dear friends, since you know this in advance, be on your guard, so that you are not led away by the error of lawless people and fall from your own stable position. (2 Peter 3:17)
How is it possible to lose our stability as Christians? The easiest way is to start doubting God’s goodness.
Like the false teachers in chapter 2, for example, instead of thinking God’s commands are for our good, we start thinking we’ll find freedom only by throwing them away. (2:19)
Or like the scoffers in chapter 3, we mistake God’s patience for injustice. And because we start doubting whether Jesus will ever come, we wonder if it’s really worth it to live godly and holy lives.
Let’s not lose our stability as Christians. Instead, hold on to this unshakeable truth: God is good.
And holding on to that truth, let us revel in the grace God has shown us, striving to know our Lord better each day.
Or in Peter’s own words,
But grow in the grace and knowledge of our Lord and Savior Jesus Christ. To him be the glory both now and to the day of eternity. (2 Peter 3:18)
Moment to Moment (Bible blog) 